Multiple-circuit electric motor



UNITED STATES PATENT QEEICE.

CHARLES J. VAN DEPOELE, "OF LYNN, MASSACHUSETTS.

MULTIPLE-CIRCUIT ELECTRIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 434,816,dated August19, 1890.

Original Application filed August 12, 1889, Serial No. 320,456 Dividedand this application filed October 28, 1889. Serial No. 328,395. (Nomodel.)

To all whom it may concern:

Be it known that I, CHARLES J. VAN DE- POELE, a citizen of the UnitedStates, residing at Lynn, in the county of Essex and State ofMassachusetts, have invented certain new and useful Improvements inlVIultiple-Circuit Electric Motors, of which the following is adescription, reference being had to the accompanying drawing, and to theletters and figures of reference marked thereon.

This application is a division of a prior case filed August 12, 1889,Serial No. 320,456, and relates to an improved form of electric motor,together with means for supplying currents thereto. An organizationembodying my invention will be hereinafter described, and referred to inthe appended claims.

The accompanying drawing is a diagrammatic View partly in elevation,showing the circuits, connections, and arrangements of a source ofcurrent, together with two forms of motor, both embodying the invention.

In said drawing, G indicates the generator or source which, as describedin the application of which this case is a division, is operated as amotor-generator, such arrangement forming a part of the system thereinset forth; but so far as the present application is concerned it isentirely immaterial how the generator-armature be driven, the onlyessential features being those which relate to the supply of current tothe working-circuits of the motors according to the invention and so asto produce the desired results.

The armature K is wound in three divisions, comprising six coils 1 1 22" 3 3, and the said six coils are connected by their outer terminals tothree insulated annular contact surfaces or rings 1 2 3*. All the innerterminals of said coils are connected to a central ring R, constitutingthe common return. Suitable contact-brushes are placed upon thecontact-rings and connected to separate insulated line-conductors 1 2 3through which three separate successive current impulses will betransmitted in one direction and three in the other at each completerevolution of the said armature.

It will be understood that, although a sp ecified number of circuits,connections, and generative coils are shown and described in thisapplication, the invention is not limited to the employment of anyparticular number of electrical divisions or subdivisions, since thearrangement shown and described maybe multiplied, as desired, without inany way depart* ing from the invention.

Two slightly-difierent forms of motor, both suitable for use with myimproved system,

are illustrated, said motors, as here shown, comprising six-polefield-magnets and two or four pole armatures. The six poles of the saidfield-magnets are so connected with the three circuit-wires extendingfrom the generator-armature that they will be energized oppositely inpairs and in succession-that is to say, that the motor will have threesets of poles on opposite sides of the armature, which will be energizedconsecutively. This is effected by carrying the conductors 1 2 3,extending from the rings 1 2 3 of the generator-armature and connectingthe same by suitable branch conductors 1 2 3, leading therefrom, toopposite pairs of field-magnet coils, the inner ends of said branchconductors being all connected through brushes to collector-rings 7-upon the armature-shafts of the motors D F. The rings 0" thus constituteone side of the common return-circuit between the multiple circuits ofthe generator and the coils of the field-magnets of the motor whichcorrespond thereto. The armature L of the motor D is provided with acontinuous Winding Z, which is joined at opposite equidistant points byconductors r r 1' T The conductors r are connected to ring 7", and thereturn current from each pair of the field-magnet coils passestherethrough in succession. The currents enteringthe armatures L Lthrough conductors r divide and flow through the armature-conductor l inmultiple arc, issuing by conductors r and tive relation to the peripheryof the armature L, and the said cores are wound with suitablemagnetizing-conductors connected in pairs with the severalsupply-conductors. Current flows from conductor 1 through branch 1 tomagnet m thence by conductor 01 to magnet m, thence by conductor n tothe com-' mon return rt. The second pair of magnets receive theircurrent from main conductor 2 through branch 2 to magnet m 'flowing'thence by conductor n to magnet m and thence by conductor n to thecommon return T The third pair of magnets is similarly energized by thecurrents flowing in the 'conductor 3, currents flowing thence byconductor 3 vto magnet on, thence by conductor a to magnet m and thenceby conductor a to the common return 7*.

WVith multiple cross-connections, as just described, the armaturebecomes self-starting, while with a single set of connections, as seenin armature L of motor F, the action is synchronic. The motorl differsslightly from that just described in having an annular fieldmagnetdivided into six sections instead of the six separate field-magnetsconnected in pairs, as shown in connection with motor D. The armature isalso of a different type, being what is known as a Siemens H. Theconnections, however, are to the same effect as in the motor D. Themotor F is illustrated principally to show that the invention is notlimited to a single term of motor, and it will be understood that anydevice capable of operation in connect-ion with the system hereindescribed may be used in connection therewith.

In the motor F the armature L is provided with opposite polar-extensionsL L the intervening iron core being wound with suitable conductor LContact-rings r 0 are provided, as in the armature L, and the oppositeends of the coils L are connected by suitable conductor, whereby thearmature-coils form a single circuit, producing poles of opposite nameat the opposite extremities of said armature. The armature L isrotatively mounted within an annular field-magnet, comprising a core P,wound with a magnetizingconductor divided into six sections p p q q t i,said sections being energized by magnetizing-conductors Wound thereon,said conductors being connected, substantially as described, withreference to the motor Dto wit, from main conductor 1 through branch 1to section 19, thence by conductor n to section 19, thence by conductorn to the return 7 the second set being connected by conductor 2 with themain conductor 2, said conductor 2 extending to section q, thence byconductor n to section q, thence by conductor n to the return 1*. Thethird set of field-magnet coils is connected to the mainsupply-conductor 3 by conductor 3 current passing from section If byconductor 11 to section t, thence by conductor 41 to the return 0*. Thusit will be seen that the multiple currents flowing in the conductors 1 23 energize the armatures L L with a polarity corresponding to that oftheir field-magnet poles, and that the field-magnet poles aresuccessively energized to coact to establish and maintain continuousrotary movement of the armature in a direction depending upon thedirection of rotation of the generator-armature, and consequently theorder in which the currents flow in the motor-circuits.

WVhile I have described the motor-armature as of the drum type, it willbe understood that any type of armature can be used with good results,and it will be apparent that any number of poles may be provided, eitherin the armature or in the field-magnets, orin both, provided they are sodisposed that their action will be successive and progressive. Theinvention therefore is not limited to the exact details of constructionshown and described, but may be varied in many ways without departingfrom the invention.

Having described my invention, what I claim, and desire to secure byLetters Patcut, is

1. An electric motor having multiple fieldmagnet poles and multiplecircuits therefor energized successively, and an armature energized bythe common return of all the independent circuits.

2. An electric-motor system comprising a multiple-current generator andcorresponding circuits between the motor and generator, a single returnfor all the independent currents, the field-magnet poles of the motorsbein g energized in succession, and their currents returned successivelythrough the armaturecircuit.

8. An electric-motor system comprising a source of successiveindependent currents energizing successive and independent fieldmagnetpoles of the motor or motors, and a common return for the independentfield-circuits, said return-circuit including the armature-conductor,substantially as described.

4. An electric motor having a plurality of field-magnet poles energizedin succession by independent currents, and a common return for theindependent currents through the armature-conductor and back to thegenerator, substantially as described.

5. An electric-motor system comprising a current-generator givingsuccessive impulses in successive circuits around the motorfieldmagnet-s, and a single return from the successive circuits throughthe armature-conductor and back to the generator in closed circuit,substantially as described.

6. An electro-dynamic motor comprising a plurality of oppositely-placedfield-magnets, a wire-wound armature mounted rotatively between allotthe field magnets, a separate supply-circuit for each set offield-magnets, and a return-conductor common to all of thefield-magnets, and connections between the said return-conductor and thearmature-circuit, whereby currents passing successively TOC ITO

nets, and connections between said return and one side of thearmature-circuit connections between the other side of saidarmaturecircuit and the continuation of the returnconductor,substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

CHARLES J. VAN DEPOELE.

Witnesses:

J. WESLEY GIBBONEY, CHARLES L. OECHSNER.

